There is a blind man in America, Daniel Kish, who uses echolocation to navigate in the same way as a bat! He does this by producing a clicking sound with his tongue and then listening intently for the sound waves to bounce back.
There is a blind man in America, Daniel Kish, who uses echolocation to navigate in the same way as a bat! He does this by producing a clicking sound with his tongue and then listening intently for the sound waves to bounce back.
The word ‘quarantine’ derives from the Venetian dialect of Italian and the words ‘quaranta giorni’, meaning ‘forty days’. This is because when it was discovered that ships were infested with plague-carrying rats they were made to sit at anchor outside Venice’s city walls for forty days before coming ashore.
The word ‘quarantine’ derives from the Venetian dialect of Italian and the words ‘quaranta giorni’, meaning ‘forty days’. This is because when it was discovered that ships were infested with plague-carrying rats they were made to sit at anchor outside Venice’s city walls for forty days before coming ashore.
The first computer for business use was developed and pioneered by a British tea shop called Lyons in the 1950’s. The LEO (Lyons Electronic Office) contained 6,000 valves and was built by Cambridge mathematician John Simmons to add up the receipts of iced buns!
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